The remains were discovered near Yekaterinburg in 1991.
"We plan to begin the excavations in June next year. We earlier thought we could start this fall, but the work was postponed due to lack of funding," Sergei Pogorelov told RIA Novosti
The excavations will be carried out over an area of around 1,000 square meters (11,000 square feet). The work will take between two and three years and cost about 10 million rubles ($370,000).
"We have already asked for financial assistance from the governor of the Sverdlovsk Region, the regional government and the culture ministry," Pogorelov said.
Nicholas II, who abdicated in March 1917, was arrested along with his family by the Bolsheviks after the October Revolution. The tsar, his wife Alexandra, and their children - Olga, Tatyana, Maria, Alexei, and Anastasia - along as several servants, were executed by a firing squad in a basement of a house in Yekaterinburg on July 16, 1918.
The bodies of all members of the Romanov family, except for those of Maria and Alexei, were found in 1991 and buried in the St. Peter and Paul Cathedral in St. Petersburg in 1998. On July 29, 2007 the remains of a boy and a young girl were found near Yekaterinburg.
In mid-July 2008, DNA tests carried out by a total of 22 experts from 12 different laboratories confirmed that the remains belonged to Prince Alexei and his elder sister Maria.